Abstract Aiming at the defects of traditional high-frequency voltage injection method, such as complex demodulation process, bandwidth limitation and estimation accuracy susceptible to magnetic circuit saturation and cross-coupling effect, an interior permanent magnet synchronous machine (IPMSM) sensorless optimization algorithm based on discrete current characteristic analysis and on-line identification of inductance error is proposed. Firstly, a high-frequency voltage model considering cross-saturation effect is established, and two orthogonal high-frequency square-wave voltage signals are injected into the stationary coordinate system, and the high-frequency responsecurrentsare separated by the designed comb filter. A comb filter is designed to separate the high-frequency response current, and the initial value of the rotor position is demodulated by using the high-frequency current at the adjacent sampling time. In the process of separation and demodulation, the disadvantages of the filter are eliminated, and the amount of calculation is small. Then, the relationship between inductance parameters and estimation error is analyzed. The inductance identification method and rotor position estimation error compensation strategy for orthogonal square-wave injection method are proposed. Finally, the estimated error identification result is compensated to the initial value of the rotor position, which improves the estimation accuracy. The experiment on the 15kW motor control platform proves the feasibility and effectiveness of the strategy. The experimental results show that the method is simple and reliable, and is not affected by the change of inductance parameters under load.
Li Wenzhen,Liu Jinglin. An Improved Sensorless Method of IPMSM Considering Magnetic Saturation and Cross-Coupling Effect[J]. Transactions of China Electrotechnical Society, 2020, 35(21): 4465-4474.
[1] Sul S, Kwon Y, Lee Y.Sensorless control of IPMSM for last 10 years and next 5 years[J]. CES Transactions on Elecreical Machines and Systems, 2017, 1(2): 91-99. [2] 刘计龙, 肖飞, 沈洋, 等. 永磁同步电机无位置传感器控制技术研究综述[J]. 电工技术学报, 2017, 32(16): 76-88. Liu Jilong, Xiao Fei, Shen Yang, et al.Position-sensorless control technology of permanent-magnet synchronous motor—a review[J]. Transactions of China Electrotechnical Society, 2017, 32(16): 76-88. [3] Song Xinda,Fang Jiancheng,Han Bangcheng, et al.Adaptive compensation method for high-speed surface PMSM sensorless drives of EMF-based position estimation error[J]. IEEE Transactions on Power Electronics, 2016, 31(2): 1438-1449. [4] Zhao Yue,Zhang Zhe,Qiao Wei, et al.An extended flux model-based rotor position estimator for sensorless control of salient-pole permanent-magnet synchronous machines[J]. IEEE Transactions on Power Electronics, 2015, 30(8): 4412-4422. [5] Kim S I, Im J H, Song E Y, et al.A new rotor position estimation method of IPMSM using all-pass filter on high-frequency rotating voltage signal injection[J]. IEEE Transactions on Industrial Electronics, 2016, 63(10): 6499-6509. [6] 张航, 刘卫国, 彭纪昌, 等. 基于方波电压信号注入的表贴式永磁同步电机饱和凸极性响应分析及转子位置估计[J]. 电工技术学报, 2017, 32(16): 106-114. Zhang Hang, Liu Weiguo, Peng Gichang, et al.Saturation Saliency response analysis and rotor position estimation based on square-wave voltage signal injection for surface-mounted permanent magnet synchronous motor[J]. Transactions of China Electrotechnical Society, 2017, 32(16): 106-114. [7] 刘颖, 周波, 冯瑛, 等. 基于脉振高频电流注入 SPMSM 低速无位置传感器控制[J]. 电工技术学报, 2012, 27(7):139-145. Liu Ying, Zhou Bo, Feng Ying, et al.Sensorless control of SPMSM based on high frequency current signal injection in the direct axis at low and zero speed[J]. Transactions of China Electrotechnical Society, 2012, 27(7): 139-145. [8] 黄科元, 陈忠强, 黄守道. 一种基于电感饱和效应的电流差值检测永磁同步电机转子初始位置的方法[J]. 电工技术学报, 2018, 32(7): 1508-1515. Huang Keyuan, Chen Zhongqiang, Huang Shoudao.A initial rotor position estimation method for PMSM based on inductance saturation effect[J]. Transactions of China Electrotechnical Society, 2018, 32(7): 1508-1515. [9] Huang Zhaobin, You Linru, Wang Zhaodong.Sensorless initial rotor position identification for non-salient permanent magnet synchronous motors based on dynamic reluctance difference[J]. IET Power Electronics,2014, 9(7): 2336-2346. [10] Zhang Xing, Li Haoyuan, Yang Shuying, et al.Improved initial rotor position estimation for PMSM drives based on HF pulsating voltage signal injection[J]. IEEE Transactions on Industrial Electronics, 2018, 65(6): 4702-4713. [11] Xu Peilin, Zhu Ziqiang.Carrier signal injection-based sensorless control for permanent magnet synchronous machine drives with tolerance of signal processing delays[J]. IET Electric Power Applications, 2017, 11(6): 1140-1149. [12] Li Haoyuan, Zhang Xing, Yang Shuying, et al.Unified graphical model of high frequency signal injection methods for PMSM sensorless control[J]. IEEE Transactions on Industrial Electronics, 2019, DOI: 10.1109/TIE. 2019. 2924863. [13] Liu J M, Zhu Z Q.Sensorless control strategy by square-waveform high-frequency pulsating signal injection into stationary reference frame[J]. IEEE Journal of Emerging and Selected Topics in Power Electronics, 2014, 2(2): 171-180. [14] Wang Gaolin, Xiao Dianxun, Zhang Guoqiang, et al.Sensorless control scheme of IPMSMs using hf orthogonal square-wave voltage injection into stationary reference frame[J]. IEEE Transactions on Power Electronics, 2019, 34(3):2573-2584. [15] 姜燕, 刘思美, 罗德荣, 等. 基于高频正交方波电压注入的永磁同步电机初始位置辨识[J]. 电工技术学报, 2019, 34(19): 4006-4016. Jiang Yan, Liu Simei, Luo Derong, et al.Rotor initial position identification based on the HF orthogonal square-wave voltage injection[J].Transactions of China Electrotechnical Society, 2019, 34(19): 4006-4016. [16] Wang Shuo, Kang Jinsong, Degano M, et al.An accurate wide-speed range control method of ipmsm considering resistive voltage drop and magnetic saturation[J]. IEEE Transactions on Industrial Electronics, 2019, DOI: 10.1109/TIE.2019.2912766. [17] Wang Qiwei, Zhang Guoqiang, Wang Gaolin, et al.Offline parameter self-learning method for general-purpose PMSM drives with estimation error compensation[J]. IEEE Transactions on Power Electronics, 2019, 34(11): 11103-11115. [18] Liu J M, Zhu Z Q.Novel sensorless control strategy with injection of high-frequency pulsating carrier signal into stationary reference frame[J]. IEEE Transactions on Industry Applications, 2014, 50(4): 2574-2583. [19] Bui M X, Faz Rahman M, Guan D, et al.A new and fast method for on-line estimation of d and q axes inductances of interior permanent magnet synchronous machines using measurements of current derivatives and inverter DC-bus voltage[J]. IEEE Transactions on Industrial Electronics, 2019, 66(10): 7488-7497. [20] Feng Guodong, Lai Chunyan, Kar N C.A novel current injection-based online parameter estimation method for PMSMs considering magnetic saturation[J]. IEEE Transactions on Magnetics, 2016, 52(7): 1-4. [21] Dang Dongquang, Rafaq M S, Choi H H, et al.Online parameter estimation technique for adaptive control applications of interior PM synchronous motor drives[J]. IEEE Transactions on Industrial Electronics, 2016, 63(3): 1438-1449. [22] Rafaq M S, Mwasilu F, Kim J, et al.Online parameter identification for model-based sensorless control of interior permanent magnet synchronous machine[J]. IEEE Transactions on Power Electronics, 2017, 32(6): 4631-4643. [23] Liu Kan, Zhu Z Q, Zhang Qiao, et al.Influence of nonideal voltage measurement on parameter estimation in permanent-magnet synchronous machines[J]. IEEE Transactions on Industrial Electronics, 2012, 59(6): 2438-2447. [24] Tang Qipeng, Shen Anwen, Luo Xin, et al.PMSM sensorless control by injecting HF pulsating carrier signal into ABC frame[J]. IEEE Transactions on Power Electronics, 2017, 32(5): 3767-3776. [25] 李峰, 车进, 刘大铭, 等. IPMSM动态电感辨识方法及转子位置估计误差补偿策略[J]. 电工技术学报, 2018, 33(23): 5418-5426. Li Feng, Chen Jin, Liu Daming, et al.Dynamic inductance identification method and rotor position estimation error compensation strategy for IPMSM[J]. Transactions of China Electrotechnical Society, 2018, 33(23): 5418-5426. [26] Stumberger B, Stumberger G, Dolinar D, et al.Evaluation of saturation and cross-magnetization effects in interior permanent-magnet synchronous motor[J]. IEEE Transactions on Industry Applications, 2003, 39(5): 1264-1271.
2020, Vol. 35 
